keep your knees straight - you can not go backward that way

keep your knees straight - you can not go backward that way

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送交者: meiyou 于 2009-10-14, 10:36:58:

回答: 学自由泳遇到瓶颈问题了，不会打水。由 shine 于 2009-10-14, 09:46:19:

应该稍微弯曲一些，直膝我也练过。 (无内容) - shine (0 bytes) 2009-10-14, 10:40:29 (373383)